Days to Hours Converter
Useful for project estimates, shipping times, fasting windows and travel planning.
1 d = 24 h
hours
1 d = 24 h
How to convert days to hours
Multiply the number of days by 24.
Formula
h = d × 24
Examples
- 1.5 d × 24 = 36 h
- 7 d × 24 = 168 h
- 30 d × 24 = 720 h
Days to hours conversion table
| Days (d) | Hours (h) |
|---|---|
| 0.5 | 12 |
| 1 | 24 |
| 1.5 | 36 |
| 2 | 48 |
| 3 | 72 |
| 4 | 96 |
| 5 | 120 |
| 6 | 144 |
| 7 | 168 |
| 10 | 240 |
| 14 | 336 |
| 21 | 504 |
| 28 | 672 |
| 30 | 720 |
| 60 | 1,440 |
| 90 | 2,160 |
Values rounded to 4 decimal places or 4 significant digits.
About days
A day here means exactly 24 hours (86,400 seconds). Calendar days can differ: a day with a daylight saving time change lasts 23 or 25 hours on the clock.
About hours
An hour is 60 minutes, or 3,600 seconds.
Frequently asked questions
How many hours are in one day?
One day equals 24 hours.
How do I convert days to hours?
Multiply the number of days by 24. For example: 7 d × 24 = 168 h.
How many days are in one hour?
One hour equals 0.04167 days.
Is the d to h conversion exact?
Yes. The factor follows directly from the official definitions of both units, so the only rounding is in how many decimals are displayed.